Tagged Questions

Solid-state physics studies how macroscopic properties of solids (mechanical, electrical, optical, etc.) result from their microscopic structure. It usually deals with the scale where quantum properties of the particles are substantial.

The circumstances in which I am asking this: I have two materials, copper and cesium, in which the surface of the two are contacting. The Fermi Energy value for copper is 7.0eV and for cesium it is ...

The circumstances of my question consists of this: I have two materials, copper and cesium, and they are sandwiched together with a layer of cesium in the middle. It is connected only on a single side ...

I'm currently studying double point groups and their applications in condensed matter physics. Let me start by giving you the definition of the double group that is used in my textbook:
Let $G$ be a ...

If I have a 2DEG with a voltage in the $x$-direction and a $B$-Field in the $z$-direction (so I also get a hall-voltage in the $y$-direction (classicaly)).
But if I do this stuff at low temperatures I ...

I struggle in understanding why in some references the bands filling by electrons in the E-k diagram is shown as an area delimited below by the dispersion curve and above by the Fermi energy (if in ...

Lets say one get a dispersion of electrons or phonons from this website: http://www.matprop.ru
Usually dispersion in particular directions is drawn: as for wurtzite crystall it is A to L, L to U and ...

So I live in Hollywood, California and last night I heard a single train horn blast through my neighborhood after that it was pretty quiet for the rest of the night. what I don't understand is I don't ...

Usually hopping on a lattice written as
$$H=-tc_i ^{\dagger} c_{i+1} + h.c$$ where $t$ represent hopping amplitude
When we consider hopping on a lattice than, Do we need at least the empty orbitals ...

In chemistry we mostly regard light/electromagnetic radiation as a beam of particles or photons. This is a very useful model to explain molecular excitations and ionisations from quantum interactions. ...

We always draw f(E) vs. E crossing at $[E_F, 0.5]$ for any temperature. But a new temperature is a different steady state. So why the value of $E_F$ (Fermi level) doesn't change with temperature?
No ...

I'm doing a (first) course in solid state physics following the book of Ashcroft/Mermin , the classes are quite theoretical and we have practically no examples. The problem that I'm having is that I ...

I have calculated the quasiparticle (QP) band structure in the GW approximation for an insulator and I'm trying to understand what the imaginary part of the self-energy represents. I understand how ...

Albert Einstein's theory of thermal capacity of a solids makes the assumption that a crystal is made up from oscillators which of course oscillate, in all three directions. Thus, for N atoms of the ...

Graphene is a well investigated two-dimensional material in nano-physics. My teacher asked me to calculate its phonon dispersion with interactions between the first and second nearest neighbors, both ...

If 99% of an atom empty, and if we say that our body is made of atoms stacked together, then why is our body a solid object, rather than 99% hollow.
I have one probable answer that I think might be ...

I'm having trouble learning about Second Harmonic Generation. I've found a bunch of sources, but they all seem to expect a fairly advanced level of knowledge about it. For example, in the wiki section ...